import { BaseSchemaApiFunction, BaseSchemaApiItem, GenericSchemaItemBase } from './base';
/**
 * Supported function bundles
 */
export type SqlBundleType = "date" | "numeric" | "string";
/**
 * Supported sql profile names
 */
export type SqlProfileType = "Field Calculation";
export type SqlValueType = "Datetime" | "Number" | "String";
/**
 * Narrowed schema item type for sql
 */
export type SqlSchemaItemBase = GenericSchemaItemBase<SqlBundleType, SqlProfileType>;
/**
 * Narrowed api function type for sql
 */
export type SqlApiFunction = BaseSchemaApiFunction<SqlBundleType, SqlProfileType, SqlValueType> & {
    /**
     * The name of the function.
     */
    name: string;
    /**
     * SQL functions may be "special registers" that are not called like regular functions.
     * For example, CURRENT_DATE is a special register.
     * These functions are not called with parentheses or arguments.
     */
    isSpecialRegister?: boolean;
    /**
     * The set of keywords that are used in the function.
     */
    keywords?: SchemaKeyword[];
};
/**
 * Narrowed api item type for sql. Sql does not have constants so all sql items are "functions".
 */
export type SqlApiItem = BaseSchemaApiItem<SqlApiFunction>;
/**
 * Describes a keyword used in a function
 */
interface SchemaKeyword {
    /**
     * The name of the keyword.
     */
    name: string;
    /**
     * The description for the keyword.
     */
    description: string;
    /**
     * (optional) position of the keyword in the function signature, default is to interlace with parameters
     */
    position?: number;
}
export {};